This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A marvel of Byzantine engineering under the streets of Istanbul.

A section of the long chain that blocked enemy ships from entering Constantinople.

Turkish adventurer antiques in the heart of the Grand Bazaar.

Climb a set of vertiginous stone steps to the top of this impressive ancient edifice.

Large miniature theme park with 100-plus models.

One of the largest wooden constructions in Europe was meant to be a casino, but soon became an orphanage.

The only residents of this abandoned housing development full of identical castles are stray cats and dogs.

This famous city eluded concrete detection until the early 2000's.

An underground network of massive stone arches and their skylit vaults support ruins of portico structures above.

A charming beach town in Turkey captures all the colors of the rainbow.

A deadly ancient portal to the underworld.

Roman ruins top white travertine terraces formed by ancient hot springs.

The largest Neolithic ruins in the world hide a notably clean prehistoric metropolis.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

This ancient subterranean megalopolis is known for the hot oil traps that were installed above each of its entrances.

This hidden gem is bathed in beautiful natural light.

The ancient abodes are a testament to human ingenuity amid harsh climates.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

This ancient city - home to nine civilizations - is soon to be buried under 200 feet of water.

An ancient church on a tiny island covered in stone bible stories has controversially been turned into a museum.

An abused and forgotten metropolis, abandoned for centuries.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.